1package eu.siacs.conversations.xmpp.jingle;
2
3import java.math.BigInteger;
4import java.security.SecureRandom;
5import java.util.HashMap;
6import java.util.List;
7import java.util.concurrent.CopyOnWriteArrayList;
8import android.annotation.SuppressLint;
9import android.util.Log;
10import eu.siacs.conversations.Config;
11import eu.siacs.conversations.entities.Account;
12import eu.siacs.conversations.entities.Transferable;
13import eu.siacs.conversations.entities.Message;
14import eu.siacs.conversations.services.AbstractConnectionManager;
15import eu.siacs.conversations.services.XmppConnectionService;
16import eu.siacs.conversations.utils.Xmlns;
17import eu.siacs.conversations.xml.Element;
18import eu.siacs.conversations.xmpp.OnIqPacketReceived;
19import eu.siacs.conversations.xmpp.jid.Jid;
20import eu.siacs.conversations.xmpp.jingle.stanzas.JinglePacket;
21import eu.siacs.conversations.xmpp.stanzas.IqPacket;
22
23public class JingleConnectionManager extends AbstractConnectionManager {
24 private List<JingleConnection> connections = new CopyOnWriteArrayList<>();
25
26 private HashMap<Jid, JingleCandidate> primaryCandidates = new HashMap<>();
27
28 @SuppressLint("TrulyRandom")
29 private SecureRandom random = new SecureRandom();
30
31 public JingleConnectionManager(XmppConnectionService service) {
32 super(service);
33 }
34
35 public void deliverPacket(Account account, JinglePacket packet) {
36 if (packet.isAction("session-initiate")) {
37 JingleConnection connection = new JingleConnection(this);
38 connection.init(account, packet);
39 connections.add(connection);
40 } else {
41 for (JingleConnection connection : connections) {
42 if (connection.getAccount() == account
43 && connection.getSessionId().equals(
44 packet.getSessionId())
45 && connection.getCounterPart().equals(packet.getFrom())) {
46 connection.deliverPacket(packet);
47 return;
48 }
49 }
50 IqPacket response = packet.generateResponse(IqPacket.TYPE.ERROR);
51 Element error = response.addChild("error");
52 error.setAttribute("type", "cancel");
53 error.addChild("item-not-found",
54 "urn:ietf:params:xml:ns:xmpp-stanzas");
55 error.addChild("unknown-session", "urn:xmpp:jingle:errors:1");
56 account.getXmppConnection().sendIqPacket(response, null);
57 }
58 }
59
60 public JingleConnection createNewConnection(Message message) {
61 Transferable old = message.getTransferable();
62 if (old != null) {
63 old.cancel();
64 }
65 JingleConnection connection = new JingleConnection(this);
66 mXmppConnectionService.markMessage(message,Message.STATUS_WAITING);
67 connection.init(message);
68 this.connections.add(connection);
69 return connection;
70 }
71
72 public JingleConnection createNewConnection(final JinglePacket packet) {
73 JingleConnection connection = new JingleConnection(this);
74 this.connections.add(connection);
75 return connection;
76 }
77
78 public void finishConnection(JingleConnection connection) {
79 this.connections.remove(connection);
80 }
81
82 public void getPrimaryCandidate(Account account,
83 final OnPrimaryCandidateFound listener) {
84 if (Config.NO_PROXY_LOOKUP) {
85 listener.onPrimaryCandidateFound(false, null);
86 return;
87 }
88 if (!this.primaryCandidates.containsKey(account.getJid().toBareJid())) {
89 final Jid proxy = account.getXmppConnection().findDiscoItemByFeature(Xmlns.BYTE_STREAMS);
90 if (proxy != null) {
91 IqPacket iq = new IqPacket(IqPacket.TYPE.GET);
92 iq.setTo(proxy);
93 iq.query(Xmlns.BYTE_STREAMS);
94 account.getXmppConnection().sendIqPacket(iq,new OnIqPacketReceived() {
95
96 @Override
97 public void onIqPacketReceived(Account account, IqPacket packet) {
98 Element streamhost = packet.query().findChild("streamhost",Xmlns.BYTE_STREAMS);
99 final String host = streamhost == null ? null : streamhost.getAttribute("host");
100 final String port = streamhost == null ? null : streamhost.getAttribute("port");
101 if (host != null && port != null) {
102 try {
103 JingleCandidate candidate = new JingleCandidate(nextRandomId(), true);
104 candidate.setHost(host);
105 candidate.setPort(Integer.parseInt(port));
106 candidate.setType(JingleCandidate.TYPE_PROXY);
107 candidate.setJid(proxy);
108 candidate.setPriority(655360 + 65535);
109 primaryCandidates.put(account.getJid().toBareJid(),candidate);
110 listener.onPrimaryCandidateFound(true,candidate);
111 } catch (final NumberFormatException e) {
112 listener.onPrimaryCandidateFound(false,null);
113 return;
114 }
115 } else {
116 listener.onPrimaryCandidateFound(false,null);
117 }
118 }
119 });
120 } else {
121 listener.onPrimaryCandidateFound(false, null);
122 }
123
124 } else {
125 listener.onPrimaryCandidateFound(true,
126 this.primaryCandidates.get(account.getJid().toBareJid()));
127 }
128 }
129
130 public String nextRandomId() {
131 return new BigInteger(50, random).toString(32);
132 }
133
134 public void deliverIbbPacket(Account account, IqPacket packet) {
135 String sid = null;
136 Element payload = null;
137 if (packet.hasChild("open", "http://jabber.org/protocol/ibb")) {
138 payload = packet.findChild("open", "http://jabber.org/protocol/ibb");
139 sid = payload.getAttribute("sid");
140 } else if (packet.hasChild("data", "http://jabber.org/protocol/ibb")) {
141 payload = packet.findChild("data", "http://jabber.org/protocol/ibb");
142 sid = payload.getAttribute("sid");
143 }
144 if (sid != null) {
145 for (JingleConnection connection : connections) {
146 if (connection.getAccount() == account
147 && connection.hasTransportId(sid)) {
148 JingleTransport transport = connection.getTransport();
149 if (transport instanceof JingleInbandTransport) {
150 JingleInbandTransport inbandTransport = (JingleInbandTransport) transport;
151 inbandTransport.deliverPayload(packet, payload);
152 return;
153 }
154 }
155 }
156 Log.d(Config.LOGTAG,"couldn't deliver payload: " + payload.toString());
157 } else {
158 Log.d(Config.LOGTAG, "no sid found in incoming ibb packet");
159 }
160 }
161
162 public void cancelInTransmission() {
163 for (JingleConnection connection : this.connections) {
164 if (connection.getJingleStatus() == JingleConnection.JINGLE_STATUS_TRANSMITTING) {
165 connection.cancel();
166 }
167 }
168 }
169}